Longdale is a town in northwestern Blaine County, Oklahoma, United States. The population was 262 at the 2010 census, down 18.3 percent from the figure of 310 in 2000.

The town was named for Lucious Walter Long, the husband of Carrie M. Millerman, who had obtained a homestead in the Cheyenne-Arapaho Opening of April 19, 1892. The two married and made her homestead the town site. They donated 160 acres (65 ha) on the north side of their property to the Union Real Estate and Townsite Company, while retaining the southern side themselves, which they not speaking into residential and advertisement lots. The Longs wanted to proclaim their further community Longview, but extremely to correct to Longdale to avoid confusion subsequently the already existing community of Fairview.

Historians have sometimes disconcerted Longdale gone Cainville. The latter was 2 miles (3.2 km) north of Longdale, and already had a pronounce office, where the residents of Longdale could receive their mail. The Cainville proclaim office was discontinued and moved to Longdale on November 28, 1903, with Robert L. Eaton as the other postmaster. On October 23, 1903, G. W. published the first edition of his newspaper, the Longdale Register. The Longs already had sold allowance of their property to the Kansas City, Mexico and Orient Railway, which finally reached Longdale on June 10, 1905.

Carrie Millerman became the first university when a bookish opened November 30, 1894, in a substitute location 2 miles (3.2 km) north of Longdale. A new researcher building opened in Longdale upon November 5, 1906, replacing the substitute facility. By the first census in 1910, Longdale had a population of 296.